must stroll
Verbo regular: stroll - strolled- strolled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must stroll
you must stroll
he must stroll
we must stroll
you must stroll
they must stroll 	I must be strolling
you must be strolling
he must be strolling
we must be strolling
you must be strolling
they must be strolling	I must have strolled
you must have strolled
he must have strolled
we must have strolled
you must have strolled
they must have strolled	I must have been strolling
you must have been strolling
he must have been strolling
we must have been strolling
you must have been strolling
they must have been strolling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not stroll
you must not stroll
he must not stroll
we must not stroll
you must not stroll
they must not stroll 	I must not be strolling
you must not be strolling
he must not be strolling
we must not be strolling
you must not be strolling
they must not be strolling	I must not have strolled
you must not have strolled
he must not have strolled
we must not have strolled
you must not have strolled
they must not have strolled	I must not have been strolling
you must not have been strolling
he must not have been strolling
we must not have been strolling
you must not have been strolling
they must not have been strolling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I stroll?
must you stroll?
must he stroll?
must we stroll?
must you stroll?
must they stroll? 	must I be strolling?
must you be strolling?
must he be strolling?
must we be strolling?
must you be strolling?
must they be strolling? 	must I have strolled?
must you have strolled?
must he have strolled?
must we have strolled?
must you have strolled?
must they have strolled? 	must I have been strolling?
must you have been strolling?
must he have been strolling?
must we have been strolling?
must you have been strolling?
must they have been strolling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not stroll?
must you not stroll?
must he not stroll?
must we not stroll?
must you not stroll?
must they not stroll? 	must I not be strolling?
must you not be strolling?
must he not be strolling?
must we not be strolling?
must you not be strolling?
must they not be strolling? 	must I not have strolled?
must you not have strolled?
must he not have strolled?
must we not have strolled?
must you not have strolled?
must they not have strolled? 	must I not have been strolling?
must you not have been strolling?
must he not have been strolling?
must we not have been strolling?
must you not have been strolling?
must they not have been strolling?